In eWOM We Trust

Electronic word-of-mouth (eWOM) is an important factor in marketing communication. As more people use eWOM to assist them in making purchase decisions, the process by which they evaluate the credibility of these online recommendations becomes increasingly relevant. Although previous studies have recognized that credibility is one of the most important antecedents of eWOM adoption, little is known about the drivers of this credibility. Thus, this paper examines factors that influence the perceived credibility of consumer online recommendations. Drawing on dual process theory and source models, hypotheses were derived and tested with structural equation modeling on a basis of 643 consumers. Generally, the paper provides evidence that expertise, trustworthiness, and aggregate rating are the most significant factors of the perceived eWOM credibility. The study also demonstrates that involvement could moderate these relationships.     

Factors influencing Generation Y consumers’ perceptions of eWOM credibility: a study of the fast-food industry

eWOM communication is certainly one of the most influential drivers of purchase decisions. However, little knowledge is available on the factors that influence the trustworthiness and credibility of eWOM communication. To address this research gap, the study aimed to assess whether the three independent variables (homophily, authority and interestingness) have a significant positive indirect effect on eWOM credibility, as mediated by source trustworthiness. The context of the study was fast-food retailers. A cross-sectional survey was conducted and the target population included all Generation Y consumers that visited the fast-food market leaders in Gauteng province, the economic hub of South Africa. Lisrel version 8.8 was used to analyse the results obtained from a realised sample of 362 respondents and to compile the structural equation model. The findings of the study support the research hypotheses formulated and offer a theoretical contribution by enhancing knowledge of the relationships between the variables investigated as well as the factors that could influence eWOM credibility. The study also has meaning to fast-food retailers, as the model could be applied to formulate appropriate strategies and influence the online conversations and perceptions of consumers.     

How credibility affects eWOM reading: The influences of expertise,trustworthiness, and similarity on utilitarian and social functions

In online information settings, a few people tend to contribute, while the majority of people consume. For this latter group of readers, electronic word of mouth (eWOM) provides information about products or service experiences that rarely are available from manufacturer-controlled sources, which makes this source of information especially helpful. In turn, eWOM influences readers' attitudes, intentions, and behavior. Manufacturers also hope to monitor and positively influence eWOM content, such as by supporting and building brand communities. But eWOM readers might doubt the credibility of information if it is mostly positive, and the usefulness of eWOM information depends on its credibility. This study offers an empirical and theoretical validation of how specific utilitarian and social functions of eWOM affect attitudes toward and intentions to read eWOM. In particular, trustworthiness is the most important credibility dimension; it affects both functions. Perceived expertise also enhances the utilitarian while similarity improves the social function of eWOM.     

The effect of negative online customer reviews on brand equity and purchase intention of consumer electronics in South Africa

This study investigated the effect that negative online customer reviews have on brand equity and purchase intention. This research examined the influence of negative electronic word of mouth (eWOM) on brand equity, as influenced by customer review quality, product involvement and source credibility. A 3 (high quality review versus low quality review versus no review) × 2 (high product involvement versus low product involvement) factorial experiment with 236 respondents was conducted. The results revealed that the presence of negative eWOM has a significant detrimental effect on brand equity and purchase intention. Furthermore, the effect of negative online customer reviews is more detrimental to the brand equity of a high involvement product than a low involvement product. The results also revealed that high quality reviews are more influential than low quality reviews with respect to brand equity, and the difference between the levels of eWOM source credibility has no significant effect on brand equity.     

How differences in eWOM platforms impact consumers’ perceptions and decision-making

ABSTRACT

This article aims to examine the effects of different features of various eWOM (electronic word-of-mouth) platforms on consumers’ perceived credibility of eWOM regarding the product-related risks. Based on the stimuli–organism–response (S–O–R) theory, this study establishes a model to explore the relationships among eWOM platforms, tie strength, social cues, and perceived eWOM credibility. A mixed design of 2 (eWOM platforms) × 2 (product-related risks) conditions experiment and a survey method is applied to verify the model. The results show that tie strength between eWOM publishers and recipients positively influences the perceived eWOM credibility. The volume of social cues in eWOM platforms positively influences the perceived credibility of a female, while the opposite is true for a male. Both tie strength and volume of social cues in social media are greater than those in e-commerce websites. For products with low risks, eWOM in e-commerce websites is perceived to be more credible. Findings implicate that interactive functions should be added to the product comment area to enhance communications between the reviewers and potential consumers. Findings also encourage the cooperation between e-commerce websites and social media and suggest that managers should develop proper strategies in different situations.     

eWOM processing from receiver perspective: Conceptualising the relationships

Electronic word-of-mouth (eWOM) communication is considered an important source of information for consumers. In existing frameworks and empirical studies, factors that lead to eWOM influence have been categorised into three essential elements equivalent to the three elements of communication processing: source, receiver and message. eWOM requires a more elaborate form of information processing, given the many-to-many nature of such communications and that the types of information processing differ between novice and experienced consumers. However, there is no conceptualisation that demonstrates the relationships among the factors of eWOM from this critical information processing perspective. Further, there is limited discourse on the situation and communication channel, although the situation and platform characteristics shape the nature of communication in the digital age. This paper reports insights obtained from an extensive literature review and presents a broader categorisation encompassing the factors of source, receiver, message, situation, task involvement and channel. Research propositions and recommendations for further research into eWOM processing are offered.     

Electronic word-of-mouth via consumer-opinion platforms: What motivates consumers to articulate themselves on the Internet?

Through Web-based consumer opinion platforms (e.g., epinions.com), the Internet enables customers to share their opinions on, and experiences with, goods and services with a multitude of other consumers; that is, to engage in electronic word-of-mouth (eWOM) communication. Drawing on findings from research on virtual communities and traditional word-of-mouth literature, a typology for motives of consumer online articulation is developed. Using an online sample of some 2,000 consumers, information on the structure and relevance of the motives of consumers’ online articulations is generated. The resulting analysis suggests that consumers’ desire for social interaction, desire for economic incentives, their concern for other consumers, and the potential to enhance their own self-worth are the primary factors leading to eWOM behavior. Further, eWOM providers can be grouped based on what motivates their behavior, suggesting that firms may need to develop different strategies for encouraging eWOM behavior among their users.     

When does electronic word-of-mouth matter? A study of consumer product reviews

Online consumer product reviews, a form of electronic word-of-mouth (eWOM), have attracted increased attention from researchers. This paper examines the persuasiveness of eWOM. Drawing on regulatory focus theory, the authors propose that the consumption goals that consumers associate with the reviewed product moderate the effect of review valence on persuasiveness. Data from lab experiments and actual online retailers suggest that consumers who evaluate products associated with promotion consumption goals perceive positive reviews to be more persuasive than negative ones (i.e., a positivity bias). Conversely, consumers who evaluate products associated with prevention consumption goals perceive negative reviews to be more persuasive than positive ones (i.e., a negativity bias).     

The Effects of Credible Online Reviews on Brand Equity Dimensions and Its Consequence on Consumer Behavior

Consumers are using social media platform to gain and share knowledge on brands. In the virtual environment, consumers are exposed to various online reviews on brands that leave an impression of brands on the minds of the consumers. The present study combines Yale attitude change model and attribution theory to examine the effects of credible online reviews on brand equity dimensions. The present study views, through the lens of Yale attitude change model, the various factors that affect credibility evaluation of online reviews. Further, attribution theory is used as the theoretical backbone to analyze the effects of credible online reviews on brand equity dimensions and finally on purchase intention. This study uses structural equations modeling (SEM) to investigate the impact of online credible reviews on customer based brand equity (CBBE) dimensions and its consequence on consumer behavior (purchase intention). Results indicate that source and review quality are the most important factors that affect consumer's credibility evaluation of a review. Online credible reviews have more significant impact on brand awareness, perceived value and organizational associations and thus leads to consumer's purchase intention in the context of consumer electronic products in India.     

Cutting Through the Online Review Jungle — Investigating Selective eWOM Processing

Consumers frequently rely on online reviews, a prominent form of electronic word-of-mouth (eWOM), before making a purchase decision. However, consumers are usually confronted with hundreds of reviews for a single product or service, as well as rich information cues on online review websites (review texts, helpfulness ratings, author information, etc.). In turn, consumers face more information cues on online review websites than they can or want to process, and are likely to proceed selectively. This paper investigates selective processing of such eWOM information cues. Results of Study 1, an exploratory study using verbal protocols, confirm that consumers display selective eWOM processing patterns and are able to articulate them. Study 2 develops and applies a measurement instrument to capture these patterns. A subsequent cluster analysis on members of a large-scale online panel (N = 2,295) indicates five prominent eWOM processing types, termed “The Efficients”, “The Meticulous”, “The Quality-Evaluators”, “The Cautious Critics”, and “The Swift Pessimists”. Insights of this research can help firms to better understand consumers' eWOM processing and improve the user-friendliness of online review websites.     

Explaining the joint effect of source credibility and negativity of information in two‐sided messages

By referring to different stages of an attribution process, this study examines how source credibility effects and opposing effects of negative information in two‐sided messages can be disentangled. The findings show that disclosure uniqueness (i.e., whether disclosures in a two‐sided message are given voluntarily or not) leads to both inferences on source credibility and inferences on product uniqueness. The inference on product uniqueness requires more cognitive effort on the part of the consumer than the inference on source credibility. Therefore, the effects of disclosures in two‐sided messages on brand attitudes depend on the cognitive load of consumers. Consumers make either an inference on the source or on both the source and the product. The results add to previous attribution research and the two‐sided message literature, showing that consumers under cognitive load can fail to make inferences on negative brand attributes in two‐sided messages. © 2010 Wiley Periodicals, Inc.     

Role of electronic word-of-mouth content and valence in influencing online purchase behavior

Electronic word of mouth (eWOM) becomes an important tool for online consumers for evaluating and selecting a product. Extant research has mainly studied how various eWOM characteristics such as valence, volume, and text-based eWOM content affect purchase behavior. This study, for the first time, has explored the role of mixed neutral WOM valence and rich eWOM content on online purchase intention. Initially, the qualitative analysis method was used to conduct in-depth interviews with experts-cum-online shoppers from different fields. Purposive sampling was used to select 14 experts and online shoppers from diverse fields. Inductive analysis was conducted to analyze the interview generated content. It helped in forming various codes and categories in explaining eWOM constructs. Content analysis was also used to analyze the importance of various factors in key constructs (themes) affecting online behavior. The finding from the content analysis confirmed that both mixed neutral eWOM and rich eWOM content positively affects online purchase intention. This study has also explored how insights derived from the content analysis of valence and content can help marketers to develop an online marketing strategy. Research implications and future research directions have been discussed in this paper.     

eWOM credibility on social networking sites: A framework

Social networking sites (SNS) offer brands the ability to spread positive electronic Word of Mouth (eWOM) for the purposes of building awareness and acquiring new customers. However, the credibility of eWOM is threatened of late as marketers increasingly try to manipulate eWOM practices on SNS. A greater understanding of eWOM credibility is necessary to better enable marketers to leverage true consumer engagement by generating credible peer-to-peer communications. Yet, to date, there is no one framework synthesising which factors constitute eWOM credibility in the online environment. This paper revisits the word of mouth credibility literature and proposes a new credibility framework – the 4Cs of eWOM Credibility: Community, Competence, Content, and Consensus.     

Too Popular to Ignore: The Influence of Online Reviews on Purchase Intentions of Search and Experience Products

Consumers assess the credibility of online product reviews to guide their purchase decisions. However, little is known about how consumers determine the credibility of online product reviews. This article examines the effect of the level of detail in a product review and the level of reviewer agreement with it on the credibility of a review and consumers' purchase intentions for search and experience products. Overall, the results indicate that more credible reviews lead to higher purchase intentions. Interestingly, the findings also demonstrate that consumers determine the credibility of a review differently for search and experience products. For search products, consumers deem online reviews to be more credible when the reviews contain detailed information about the product. However, for experience products, consumers determine the credibility of a review by assessing the level of reviewer agreement with a review. The lack of diagnosticity of detailed information in online reviews of experience products is attributed to the idiosyncratic nature of experiences. Implications for research and practice are discussed.     

Measuring the impact of online reviews on consumer purchase decisions – A scale development study

Consumers' exposure to online reviews influences their online retail shopping behavior. They search for reviews while evaluating products for purchase decisions. Past studies have indicated that online reviews affect the credibility and trust of the sellers and the products they sell on online platforms. Keeping this in view, the current paper aims to develop and validate a scale to understand the impact of online reviews on consumer purchase decisions. Data were collected from 431 young online shoppers for this research. The initial exploratory factor analysis (EFA) results helped identify four factors, viz. source credibility, volume, language and comprehension, and relevance which constitute the scale. The scale was validated by confirmatory factor analysis (CFA). The study's findings fill the gap of having a standardized scale that online retailers can use as indicators to assist consumers in their online decision-making. The discussions and implications support consumers' susceptibility to online reviews, an essential source for product and brand information in facilitating online consumers' purchase decisions.     

Word-of-mouth rhetorics in social media talk

Although researchers and practitioners have access to a growing body of evidence on the effects of electronic word-of-mouth (eWOM) frequency and valence, a more detailed understanding of eWOM content is needed in order to better influence these social media-enabled conversations. Based on an ethnomethodological analysis of community conversations in a popular parenting online forum, we reveal that eWOM is a powerful social act in which consumers use a broad repertoire of eWOM rhetorical methods. The repertoire for advice-seeking talk includes five components: seeker's legitimacy, topic legitimacy, request formulation, solicitation of responders, and requested response framing. The repertoire for advice-giving includes four components: foundation of authority, advice framing, advice focus, and advice scheme. For each of these components in the two repertoires, we identify corresponding rhetorical methods that can be used in the conversation (over 30 methods in total). Preliminary evidence also suggests that rhetorical alignment between advice-seekers and givers drives effectiveness of eWOM advice. The proposed rhetorical framework has relevance and implication for the many areas where social media and marketing meet.     

How Dispersive Opinions Affect Consumer Decisions: Endowment Effect Guides Attributional Inferences

Electronic word-of-mouth (eWOM) dispersion, reflecting the extent of reviewers’ opinion divergence regarding a product, determines consumer decisions. Drawing upon the endowment effect and attribution literature, this research proposes that the endowment effect mediates the influence of eWOM dispersion on attributional inferences, and the display formats of eWOM dispersion (“horizontal bar chart” vs. “eWOM content”) moderate the mediating influence of endowment effect on attributional inferences of eWOM dispersion. Three complementary studies reveal three key insights in this setting. First, when consumers already having an emotional attachment to a product and subsequently encountering dispersive eWOM, the higher the level of eWOM dispersion, the stronger the endowment effect. Secondly, In such circumstance, the stronger endowment effect promotes more reviewer-related attribution inference of high-dispersion eWOM, and the weaker endowment effect promotes more product-related attribution inference of low-dispersion eWOM. Third, the positive influence of eWOM dispersion on endowment effect is stronger for eWOM dispersion in the complexity or disfluency display format (i.e. “reviewers’ impression of product”) than for eWOM dispersion in the simply of fluency display format (i.e. “horizontal bar chart”), more importantly, the mediating influence of endowment effect on attributional inferences is moderated by the display formats of eWOM dispersion, and this findings persists even when product category (hedonic vs. utilitarian) is taken into consideration. The theoretical implications for the eWOM dispersion and attribution literature and practical implications for online retailers are discussed.     

The CEO endorser and message source credibility: an empirical investigation of antecedents and consequences

This article investigates the antecedents and consequences of source credibility within the context of the relatively new but growing phenomenon of Chief Executive Officer (CEO) endorsers. The study results indicate that source credibility is a central determinant of a CEO endorsers' ability to effect desired outcome states. Results also indicate that the effect of message source credibility on purchase intentions, though strong, is not direct because beliefs about critical product attributes mediate the effect of a message source's credibility on behavioural intentions. The results of the study also indicate that models of source credibility derived from the celebrity endorser literature do not generalize to the CEO endorser context. Specifically, the attractiveness and expertise of the message source had no significant impact on receivers' perceptions of credibility.     

User-generated product reviews on the internet: the drivers and outcomes of the perceived usefulness of product reviews

This study examines how people cope with the user-generated product reviews (UGPRs) found on various websites where anonymous web users post and share their personal product usage experiences. Based on information processing model of communication, we postulate that there are source, message, media, and receiver factors to influence individuals' psychological processing of the UGPR messages, and its subsequent behavioral outcomes. A survey was administered by a professional market research firm to 262 randomly selected US residents from 18 to 55 years old. Consistent with the predictions, the results of the structural equation modeling analysis showed that the perceived source expertise, message objectivity, website credibility, and receiver–source similarity had positive and direct impacts on the perceptions of UGPR usefulness, which, in turn, positively influenced individuals' willingness to share product reviews with others. A series of causal model invariance tests also confirmed that the findings were statistically invariant across different subgroups divided by such factors as product categories, websites, subjective product class knowledge, past UGPR experience, and the susceptibility to informational influence.     

Online Shopper Reviews: Ramifications for Promotion and Website Utility

Today's consumers are empowered with online shopper reviews which are mostly written and posted by buyers, customers, users, or visitors at a website. Shopper reviews will become more popular and ubiquitous in e-tailing in the near future. However, the marketing literature is still limited when it comes to knowledge of how shoppers perceive and use online reviews in their purchase decisions. Hence, this study explored shoppers’ predispositions toward positive or negative reviews and examined the impact of consumers’ attitudes and usage patterns on their perceived helpfulness and credibility of online shopper/peer reviews. One interesting finding from our study of 342 online shoppers was that consumers who would pay greater attention to positive reviews gave reviews more credible and usefulness ratings than their counterparts who would focus on the negative reviews.